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Code Error Corrective Action E031 Fan motor locked E032 Fan motor revolution error 1. Reconnect the connector, check if it is off the PCB 2. Check motor will spin, if not replace the fan motor 3. Check to make sure that nothing is stopping the fan from rotating – not much torque available 4. Check fan is not being affected by winds – install a baffle if needed 5. Check parameters to see motor speed 1. Check the heat pump piping for debris or valves being closed 2. Confirm that the connector for the water circulation pump is connected to the PCB correctly 3. Replace the water circulation pump Replace the PCB - These are the eccentric error codes that are seen with inverter drive units – such as IPM Overcurrent. Always perform the 3 system checks: Incoming voltage must be 187V to 253V – 1 Ph. Check power wiring at the terminals for loose wires. Check wiring to the compressor from PCB. Check compressor resistance. RED-WHT WHT-BLU BLU-RED 0.802 0.802 0.802 1.Check power wiring voltage may be down causing reduced operation 2.Check piping for blockage and/or freeze up preventing flow in or out of the unit 3.Ensure all isolation valves are open & tank is completely filled 4.Check water pump for operation (parameters) ensure power wiring is connected to PCB 5.Check all the air is bled from the heat pump 6.Check if inlet or outlet temp, discharge sensor have fallen out of their wells 7.Check Expansion Valve Coil power connection and Coil Resistance should be 46Ω Water circulation pump locked or circulating below 150 RPM E041 System control error – Solution – ~ Replacement PCB or possibly E066 Replacement Unit E034 E080 Outlet Water Temperature Rise, unit is not hitting set point water & water pump is running continuously 30PDF Image | Sanden SANCO2 Heat Pump Water Heater 2017
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